"In a stunning one-two punch, Microsoft will announce separate nonexclusive deals today with both Facebook and Twitter to integrate their real-time feed of status updates into the Bing search service." << BOOM , looks like Twitter all of a sudden has a revenue stream

According to sources, Microsoft (MSFT) digital head Qi Lu will announce the deal onstage in a few hours at the Web 2.0 Summit.

"A combination of friend-finder, city guide and competitive bar game, Foursquare lets users “check in” with a cellphone at a bar, restaurant or art gallery. That alerts their friends to their current location so they can drop by and say hello."